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ON (Optimum Nutrition) Serious Mass, 12 lb



Key Features:

  • ON SERIOUS MASS CHOCOLATE is an excellent weight gain formula with carb-protein ratio of 5:1
  • It delivers an astonishing 50g of Blended Protein and over 250g of Carbohydrates with no added sugar per serving.
  • ON SERIOUS MASS CHOCOLATE consists of 25 Vitamins and essential minerals that makes the health drink a complete nutritious and power pack formula.
  • ON SERIOUS MASS CHOCOLATE 12LB is enhanced with Creatine, Glutamine and Glutamic Acid


Optimum Nutrition Serious Mass 12 lb Chocolate is an ultimate weight gain solution for those who need those extra calories but are going through a hard time consuming enough of them. With 1263 calories and 50 grams in every serving of protein for muscle recovery, this Serious Mass from Optimum Nutrition is the ultimate in weight gain formula. With 1,263 calories per serving and 50 grams of protein for muscle recovery support, this weight gain formula from ON makes it the ideal post-workout and between meals shake to help you attain your goals. ON Serious Mass help you enhance the physique that you have always wanted.

Product Overview: –

  •          Serving Size – 334g
  •          Calories per Serving – 1263
  •          Protein per Serving – 50g
  •          Flavor – Chocolate
  •          Goal – Bulking up
  •          Other Ingredients – Protein Blend, Cocoa, Ascorbic Acid, Zinc Citrate, Folic Acid etc.
Product Benefits
  • High-Calorie Formula to supports Weight Gain
  • 50 Grams of Protein per Serving for Muscle Support
  • Enhanced with Creatine, Glutamine & +23 Essential Vitamins and Minerals


Add two heaping scoops of Optimum Nutrition Serious Mass 12 lb Chocolate to a blender filled with 24 oz (710 mL) of water. Blend for 45-60 seconds and then add a few ice cubes. If desired, add other calorie-contributing ingredients and blend for an additional 30-45 seconds.


Mixing two scoops of Optimum Nutrition Serious Mass 12 lb Chocolate with 24 oz (710 ml) of non-fat or low-fat milk instead of water will give you a thicker, creamier, higher-calorie shake. First-time users may find it beneficial, to begin with, 1/2 of a serving daily for the first week and then increasing it gradually to 1 or more full servings several times a day.
Optimum Nutrition Serious Mass 12 lb Chocolate is a substantial weight-gain supplement, which can be used to feed to your serious calorie needs in a variety of different ways.

Between Meals

Drink 1/2-1 serving of Optimum Nutrition Serious Mass Chocolate between meals to maintain positive nitrogen balance and support a high-calorie diet.


Begin drinking a 1/2-1 serving of Serious Mass 30-45 minutes following exercise to support maximum recovery.

Before Bed

Drink 1/2-1 serving of Optimum Nutrition Serious Mass 12 lb Chocolate about 45-60 minutes before bed to provide nutrients to recovering muscle throughout the night.


For best results use Optimum Nutrition Serious Mass 12 lb Chocolate combined with intense weight training (3-5 times per week) and a sensible whole foods diet. Also, keep in mind that sufficient recovery between workouts impacts your ability to gain lean mass. Allowing at least 48 hours between workouts involving the same body parts is recommended.

Additional information


ON (Optimum Nutrition)


Chocolate, Vanilla

Veg / Non-Veg


Serving Size

334 g


Bulking Up

Number of Servings


Weight (kg)








Calories per Serving


Importer Name

Bright Commodities, Glanbia Performance Nutrition

Manufacturer Name

Optimum Nutrition, Tirupati Wellness

Country of Origin



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